Casting sand mold forming device

Abstract

The invention belongs to the technical field of casting, and particularly relates to a casting sand mold forming device which comprises a supporting frame, a mold bottom plate is fixedly installed on the upper end face of the supporting frame, a fixing support is installed on the upper end face of the supporting frame, and a reciprocating air cylinder is installed at the end, away from the supporting frame, of the fixing support. An upper mold plate is installed at the telescopic end of the reciprocating air cylinder, a first side mold plate and a second side mold plate are installed on the upper end face of the mold bottom plate in a sliding mode, and a forming cavity is formed among the first side mold plate, the second side mold plate and the upper mold plate; after one-time forming is completed, the telescopic end of the reciprocating air cylinder drives the upper mold plate to move so that the upper mold plate can move upwards, then the first side mold plate and the second side mold plate are controlled to be away from the formed sand in sequence, through the design, the formed sand does not need to be ejected out or pulled down, and it is avoided that when the formed sand is directly ejected out or pulled down, the formed sand cannot be directly ejected out or pulled down. Protruding parts on the surface of the formed sand material are peeled off due to shearing force.

Description

Technical Field

[0001] The invention belongs to the technical field of casting, in particular to a casting sand mold forming device. Background Art

[0002] Sand casting is a traditional process that uses sand as the molding material to create metal castings by creating sand molds and cavities. The core process includes: mold preparation → sand filling → compaction → demolding.

[0003] The existing technology has also proposed some solutions, such as a patent application with publication number CN222740234U that discloses a sand casting mold, which belongs to the field of sand casting technology. It includes a mold plate, a sand frame is provided above the mold plate, and positioning cylinders are fixedly connected to the four corners of the outer periphery of the sand frame. A guide plate is provided below the mold plate, and a material guide frame is provided below the guide plate. The material guide frame is inclined, and the lower end surface of the guide plate is fixedly connected to a support rod. Through the guide plate and the material guide frame, clay sand is discharged from one end of the material guide frame, which makes it convenient for staff to collect overflowed clay sand, effectively controls the flow and collection of clay sand, reduces the waste of clay sand and unnecessary cleaning work, and improves material utilization.

[0004] Although the above solution can facilitate the collection of overflowed clay sand by the staff, there are still other problems in its actual use. For example, after the sand material is formed, the current mold generally removes the molding sand by ejecting or pulling down. However, if the molding sand has a complex contour, that is, there are protrusions on the surface of the molding sand, when it is removed by ejecting or pulling down, it is very easy for the protrusions to be subjected to shear force and peel off.

[0005] To this end, the present invention provides a casting sand mold forming device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a casting sand mold forming device described in the present invention includes a support frame, the upper end surface of the support frame is fixedly installed with a mold base plate, the upper end surface of the support frame is installed with a fixed bracket, the end of the fixed bracket away from the support frame is installed with a reciprocating cylinder, the telescopic end of the reciprocating cylinder is installed with an upper template, the upper end surface of the mold base plate is slidably installed with side template 1 and side template 2, and a molding cavity is formed between the side template 1, side template 2 and the upper template.

[0008] Preferably, contact 1 is installed on the side wall of the upper template, and contact 2 is installed on the upper end surface of the support frame through a support rod, and contact 1 and contact 2 are designed to be on the same vertical plane; when the upper template follows the reciprocating cylinder to move up and down, contact 1 and contact 2 will contact, and the upper end surface of the upper template is provided with a feed port; during operation, in the initial state, that is, when the upper template and the side template below are not combined, contact 1 and contact 2 are not in contact at this time. When casting is required, the telescopic end of the reciprocating cylinder is controlled to move so that the telescopic end drives the upper template and contact 1 to move downward synchronously. When the upper template is combined with the side template 1 and side template 2 below, contact 1 and contact 2 are also in contact at this time, and contact 2 will transmit the contact signal to the controller. After receiving the signal, the controller transmits the sand material through an external pipe to the molding cavity between side template 1, side template 2 and the upper template.

[0009] Preferably, two side templates 1 and 2 are designed respectively, and the side walls of the two side templates 1 are equipped with L-shaped connecting frames, and the ends of the L-shaped connecting frames away from the side template 1 are equipped with tooth plates, and the tooth plates are slidably arranged on the lower end surface of the mold base plate, and the lower end surface of the mold base plate is provided with a driving unit, which is used to drive the two tooth plates away from each other; during operation, when the sand material inside the cavity needs to be taken out after one-time molding, the driving unit of the lower end surface of the mold base plate is controlled to operate, so that the driving unit drives the two tooth plates away from each other, and the two tooth plates respectively drive the L-shaped connecting frames connected thereto to move, so the two L-shaped connecting frames will respectively drive the side templates 1 connected thereto to move away from each other, so that the molding sand material can be avoided from being directly ejected, and the problem of peeling off caused by shear force on the protruding parts can be avoided, thereby ensuring the integrity of the molding sand material.

[0010] Preferably, the driving unit includes two groups of transverse shafts, which are rotatably arranged below the mold base plate. Gears 1 are fixedly installed on the outer circumferences of the two groups of transverse shafts. The two groups of gears 1 are respectively engaged with two tooth plates. A limiting groove 1 is provided on the upper end surface of the mold base plate, and the L-shaped connecting frame is slidably arranged in the limiting groove 1 through a limiting plate.

[0011] Preferably, the driving unit also includes gear 2, and there are multiple gears 2, which are respectively fixedly installed on the ends of the horizontal shafts, and adjacent gears 2 are meshedly connected. The gear 2 is rotatably set on the side wall of the support frame, and the lower end surface of the mold bottom plate is provided with a groove adapted to the tooth plate, and the end of one of the horizontal shafts is connected to the output end of the motor; during operation, when it is necessary to take out the side template 1, the motor is controlled to drive one of the horizontal shafts to rotate, and one of the horizontal shafts drives the gear 2 connected thereto to rotate. Since the adjacent gears 2 are meshedly connected, the horizontal shaft on the other side will also rotate, so that the two horizontal shafts can rotate at the same time. With this design, the two side templates 1 can be moved at the same time when using one control source, that is, the two side templates 1 can be moved away at the same time, which is convenient for the subsequent removal of the molding sand.

[0012] Preferably, the side wall of the side template 2 is provided with a limiting square groove, and the side template 1 is slidably arranged inside the limiting square groove by a limiting frame, the shape of the limiting frame is adapted to the shape of the limiting square groove, and the side wall of the side template 2 is provided with a pushing unit, and the pushing unit is used to drive the side template 2 to move toward the side away from the molding sand material; when working, when the L-shaped connecting frames on both sides drive the corresponding side template 1 to move away from the molding sand material, the two side templates 1 will first move on the side wall of the side template 2, that is, the two side templates 1 will drive the limiting frames to move along the limiting square groove, and at this time the side template 2 will not move.

[0013] Preferably, the pushing unit includes a limiting support rod, which is slidably set on the upper end surface of the mold base plate, and a sliding plate is installed on the end of the limiting support rod, which is slidably set on the upper end surface of the mold base plate. The end of the sliding plate is fixedly connected to the side template 2, and the side walls of the two gears 2 are both equipped with limiting bosses. During the rotation of the gear 2, the raised part of the limiting boss will contact the end of the limiting support rod.

[0014] Preferably, the shape of the limiting support rod close to the limiting boss is an arc shape, and the side wall of the limiting boss is provided with an arc groove adapted to the limiting support rod; when working, since the shape of the limiting support rod close to the limiting boss is an arc shape, it is convenient for the limiting boss to squeeze the end of the limiting support rod, so that the limiting support rod drives the sliding plate to move.

[0015] Preferably, a guide groove is provided on the upper end surface of the mold bottom plate, the sliding plate is slidably arranged inside the guide groove, a limit spring is fixedly installed on the groove wall of the guide groove, and the limit spring is connected to the side wall of the sliding plate away from the groove wall of the guide groove.

[0016] Preferably, the two limiting support rods are designed on two different axes, and the end of each limiting support rod corresponds to each limiting boss; such a design can facilitate the two limiting bosses to squeeze the end of the limiting support rod at the same time, so that the two side templates move at the same time.

[0017] The beneficial effects of the present invention are as follows: 1. In the sand casting molding device of the present invention, when the upper mold plate is combined with the lower side mold plates 1 and 2, contact points 1 and 2 also come into contact, and contact point 2 transmits a contact signal to a controller. After receiving the signal, the controller transmits sand material through an external pipe into the molding cavity between the side mold plates 1, 2, and the upper mold plate. The design of contact one and contact two can ensure that the upper template is completely combined with side template one and side template two. If contact one does not contact contact two after moving downward, it means that the upper template is not combined with side template one and side template two. At this time, this device should be repaired to facilitate the molding of sand materials.

[0018] 2. The present invention describes a casting sand mold forming device, in which when gear two is rotating and drives side template one to move away from each other, the limiting boss will move toward the end of the limiting support rod. When side template one moves along the limiting square groove and is completely separated from side template two, the raised end of the limiting boss will contact the end of the limiting support rod. As gear two continues to rotate, the raised end of the limiting boss will squeeze the end of the limiting support rod, so that the limiting support rod drives the sliding plate and side template two to move away from the molding sand material. This facilitates the successive movement of side template one and side template two, thereby ensuring the molding rate of the sand material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 It is a structural schematic diagram of the upper template in the present invention; Figure 3 It is a structural schematic diagram of the mold bottom plate of the present invention; Figure 4 It is a structural schematic diagram of the tooth plate in the present invention; Figure 5 It is a structural schematic diagram of gear 1 in the present invention; Figure 6 It is a structural schematic diagram of the side template 2 in the present invention; Figure 7 It is a structural diagram of the position-limiting support rod in the present invention; Figure 8 It is a structural schematic diagram of the sliding plate in the present invention.

[0021] In the figure: 1. Support frame; 2. Mold base plate; 201. Side template 1; 202. Side template 2; 3. Fixed bracket; 301. Reciprocating cylinder; 4. Upper template; 5. Contact 1; 6. Contact 2; 7. L-shaped connecting frame; 8. Tooth plate; 9. Horizontal axis; 10. Gear 1; 11. Limiting groove 1; 12. Gear 2; 13. Limiting square groove; 14. Limiting frame; 15. Limiting support rod; 16. Sliding plate; 17. Limiting boss; 18. Guide groove; 19. Limiting spring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1 to 8 As shown, a casting sand mold forming device according to an embodiment of the present invention includes a support frame 1, a mold base plate 2 is fixedly mounted on the upper end surface of the support frame 1, a fixed bracket 3 is mounted on the upper end surface of the support frame 1, a reciprocating cylinder 301 is mounted on the end of the fixed bracket 3 away from the support frame 1, an upper template 4 is mounted on the telescopic end of the reciprocating cylinder 301, a side template 1 201 and a side template 2 202 are slidably mounted on the upper end surface of the mold base plate 2, and a molding cavity is formed between the side template 1 201, the side template 2 202 and the upper template 4; When working, in the initial state, refer to the attached Figure 1 As shown, at this time, a molding cavity is formed between the side template 1 201, the side template 2 202 and the upper template 4, and sand is introduced into the through hole in the middle of the upper template 4 and the cavity through an external material feeding pipe to perform sand molding; After one-time molding is completed, the upper template 4 is first moved by the telescopic end of the reciprocating cylinder 301, so that the upper template 4 moves up, and then the side template 1 201 and the side template 2 202 are controlled to move away from the molding sand material in sequence. With this design, there is no need to eject or pull down the molding sand material, and the problem of peeling caused by the shear force on the raised parts of the molding sand material surface when directly ejecting or pulling down the sand material is avoided. By designing the lateral parting and demoulding, the sand mold is naturally released without the action of vertical external force, thereby ensuring the integrity of the complex contour.

[0024] The side wall of the upper template 4 is installed with a contact 1 5, and the upper end surface of the support frame 1 is installed with a contact 2 6 through a support rod. The contact 1 5 and the contact 2 6 are designed to be on the same vertical plane; when the upper template 4 moves up and down following the reciprocating cylinder 301, the contact 1 5 and the contact 2 6 will contact each other, and the upper end surface of the upper template 4 is provided with a feed port; During operation, in the initial state, that is, when the upper template 4 and the side template below are not combined, the contact 1 5 and the contact 2 6 are not in contact. When casting is required, the telescopic end of the reciprocating cylinder 301 is controlled to move, so that the telescopic end drives the upper template 4 and the contact 1 5 to move downward synchronously. When the upper template 4 is combined with the side template 1 201 and the side template 2 202 below, the contact 1 5 and the contact 2 6 are also in contact, and the contact 2 6 will transmit the contact signal to the controller. After receiving the signal, the controller transmits the sand material through the external pipe to the molding cavity between the side template 1 201, the side template 2 202 and the upper template 4; Through the design of contact 1 5 and contact 2 6, it can be ensured that the upper template 4 is completely combined with the side template 1 201 and the side template 2 202. If contact 1 5 does not contact contact 2 6 after moving downward, it indicates that the upper template 4 is not combined with the side template 1 201 and the side template 2 202. At this time, this device should be repaired to facilitate the molding of the sand material.

[0025] Two side templates 1 201 and two side templates 202 are respectively designed. The side walls of the two side templates 1 201 are both installed with L-shaped connecting frames 7. The ends of the L-shaped connecting frames 7 away from the side template 1 201 are installed with tooth plates 8. The tooth plates 8 are slidably arranged on the lower end surface of the mold base plate 2. The lower end surface of the mold base plate 2 is provided with a driving unit for driving the two tooth plates 8 away from each other. During operation, when the sand material inside the cavity needs to be taken out after it is formed once, the driving unit on the lower end surface of the mold base plate 2 is controlled to operate, so that the driving unit drives the two tooth plates 8 away from each other, and the two tooth plates 8 respectively drive the L-shaped connecting frames 7 connected to them to move, so the two L-shaped connecting frames 7 will respectively drive the side templates 201 connected to them to move away from each other, so that the molding sand material can be avoided from being directly ejected, and the problem of peeling off caused by shear force on the protruding parts can be avoided, thereby ensuring the integrity of the molding sand material.

[0026] The driving unit includes two sets of transverse shafts 9, which are rotatably arranged below the mold base plate 2. Gears 10 are fixedly installed on the outer circumferences of the two sets of transverse shafts 9. The two sets of gears 10 are respectively engaged with the two gear plates 8. A limiting groove 11 is provided on the upper end surface of the mold base plate 2. The L-shaped connecting frame 7 is slidably arranged in the limiting groove 11 through a limiting plate. During operation, by driving the horizontal shaft 9 to rotate, the horizontal shaft 9 drives the gear 10 on its outer peripheral surface to rotate, and the two gears 10 will drive the toothed plates 8 meshing with them to move, and then the two toothed plates 8 will move away from each other. Moreover, since the L-shaped connecting frame 7 is slidably set in the limiting groove 11 through the limiting plate, the two L-shaped connecting frames 7 can be ensured to move on the same axis during the movement under the limitation of the two, so that the two side templates 201 can be moved away from each other, avoiding the problem of deviation of the side template 201 during the movement, which is conducive to removing the molding sand.

[0027] The driving unit further includes a second gear 12, of which a plurality are provided and fixedly mounted on the ends of the transverse shaft 9, respectively. Adjacent second gears 12 are meshed with each other, and the second gear 12 is rotatably mounted on the side wall of the support frame 1. The lower end surface of the mold bottom plate 2 is provided with a groove adapted to the tooth plate 8, and one end of the transverse shaft 9 is connected to the output end of the motor; During operation, when the side template 201 needs to be taken out, the control motor drives one of the horizontal shafts 9 to rotate, and one of the horizontal shafts 9 drives the gear 2 12 connected to it to rotate. Since the adjacent gear 2 12 is meshed and connected, the horizontal shaft 9 on the other side will also rotate, so that the two horizontal shafts 9 can rotate at the same time. With this design, when using one control source, the horizontal shaft 9 can drive the gear 10 to rotate, the gear 10 drives the tooth plate 8 to move, and the tooth plate 8 drives the L-shaped connecting frame 7 and the side template 201 to move, thereby making the two side templates 201 move at the same time, that is, the two side templates 201 can be moved away from each other at the same time, which is convenient for the subsequent removal of the molding sand.

[0028] The side wall of the second side template 202 is provided with a limiting square groove 13, and the first side template 201 is slidably arranged inside the limiting square groove 13 by a limiting frame 14. The shape of the limiting frame 14 is adapted to the shape of the limiting square groove 13. The side wall of the second side template 202 is provided with a pushing unit, and the pushing unit is used to drive the second side template 202 to move to a side away from the molding sand material; During operation, when the L-shaped connecting frames 7 on both sides drive the corresponding side template 1 201 to move away from the molding sand material, the two side templates 1 201 will first move along the side wall of the side template 2 202, that is, the two side templates 1 201 will drive the limiting frames 14 to move along the limiting square groove 13, and at this time the side template 2 202 will not move; When side template 1 201 is completely separated from side template 2 202, the pushing unit will start to operate and drive the two side templates 202 to move away from each other. In this way, side template 1 201 moves first and side template 2 202 moves later, which facilitates the removal of sand and avoids the problem of peeling off of the raised parts of the molding sand when some molding sand with protrusions is directly ejected or pulled down, which is beneficial to the subsequent use of molding sand.

[0029] The pushing unit includes a limiting support rod 15, which is slidably arranged on the upper end surface of the mold base plate 2. A sliding plate 16 is installed at the end of the limiting support rod 15, and the sliding plate 16 is slidably arranged on the upper end surface of the mold base plate 2. The end of the sliding plate 16 is fixedly connected to the side template 202, wherein the side walls of the two gears 12 are both equipped with limiting bosses 17. When the gear 12 rotates, the raised portion of the limiting boss 17 will contact the end of the limiting support rod 15; During operation, in the initial state, the limiting boss 17 and the limiting support rod 15 are in a distanced state and are not in contact with each other; When gear 2 12 is rotating and drives side template 1 201 away from each other, the limiting boss 17 will move toward the end of the limiting support rod 15. When side template 1 201 moves along the limiting square groove 13 and is completely separated from side template 2 202, the raised end of the limiting boss 17 will contact the end of the limiting support rod 15. As gear 2 12 continues to rotate, the raised end of the limiting boss 17 will squeeze the end of the limiting support rod 15, so that the limiting support rod 15 drives the sliding plate 16 and side template 2 202 to move away from the molding sand material. This facilitates the successive movement of side template 1 201 and side template 2 202, thereby ensuring the molding rate of the sand material.

[0030] The shape of the limiting support rod 15 on the side close to the limiting boss 17 is an arc shape, and the side wall of the limiting boss 17 is provided with an arc groove adapted to the limiting support rod 15; when working, since the shape of the limiting support rod 15 on the side close to the limiting boss 17 is an arc shape, it is convenient for the limiting boss 17 to squeeze the end of the limiting support rod 15, so that the limiting support rod 15 drives the sliding plate 16 to move.

[0031] A guide groove 18 is formed on the upper end surface of the mold base plate 2, and the sliding plate 16 is slidably arranged inside the guide groove 18. A limit spring 19 is fixedly installed on the groove wall of the guide groove 18, and the limit spring 19 is connected to the side wall of the sliding plate 16 away from the groove wall of the guide groove 18; During operation, when the end of the limit support rod 15 is squeezed and moved by the limit boss 17, the limit support rod 15 drives the sliding plate 16 away from the molding sand material, and the sliding plate 16 will squeeze the limit spring 19 connected to it, so that the limit spring 19 is in a compressed state. When the molded sand material is taken out and the template needs to be restored to its initial state, the two gears 2 12 are controlled to reverse, so that the gear 2 12 drives the limit boss 17 away from the limit support rod 15. At this time, the limit spring 19 and the sliding plate 16 are no longer squeezed. As the limit boss 17 gradually moves away from the limit support rod 15, under the action of the elastic force of the limit spring 19 in the compressed state, it can quickly drive the sliding plate 16 and the side template 2 202 to return to their initial position, and then it is convenient for the side template 1 201 to move along the limit square groove 13 to the initial position of the side template 2 202.

[0032] The two limiting support rods 15 are designed on two different axes, and the end of each limiting support rod 15 corresponds to each limiting boss 17; such a design can facilitate the two limiting bosses 17 to squeeze the ends of the limiting support rod 15 at the same time, so that the two side templates 201 move at the same time.

[0033] When working, in the initial state, refer to the attached Figure 1 As shown, at this time, a molding cavity is formed between the side template 1 201, the side template 2 202 and the upper template 4, and sand material is introduced into the through hole in the middle of the upper template 4 and the inside of the cavity through an external material feeding pipe to perform sand molding; after one-time molding is completed, the upper template 4 is first driven to move by the telescopic end of the reciprocating cylinder 301, so that the upper template 4 moves upward, and then the side template 1 201 and the side template 2 202 are controlled to move away from the molding sand material in sequence. With this design, there is no need to eject or pull down the molding sand material, and the problem of peeling caused by the shear force on the raised part of the molding sand material surface when directly ejecting or pulling down the sand material is avoided. By designing the lateral parting demoulding, the sand mold is naturally released without the action of vertical external force, thereby ensuring the integrity of the complex contour; In the initial state, that is, when the upper template 4 and the side template below are not combined, the contact 1 5 and the contact 2 6 are not in contact. When casting is required, the telescopic end of the reciprocating cylinder 301 is controlled to move, so that the telescopic end drives the upper template 4 and the contact 1 5 to move downward synchronously. When the upper template 4 is combined with the side template 1 201 and the side template 2 202 below, the contact 1 5 and the contact 2 6 are also in contact, and the contact 2 6 will transmit the contact signal to the controller. After receiving the signal, the controller transmits the sand material to the side template 1 201 and the side template 2 202 through the external pipe. In the molding cavity between the second template 202 and the upper template 4; when the sand material in the cavity needs to be taken out after the one-time molding is completed, the driving unit of the lower end surface of the mold bottom plate 2 is controlled to operate, so that the driving unit drives the two tooth plates 8 to move away from each other, and the two tooth plates 8 respectively drive the L-shaped connecting frames 7 connected thereto to move, so that the two L-shaped connecting frames 7 will respectively drive the side templates 1 201 connected thereto to move away from each other, so as to avoid directly ejecting the molding sand material and avoiding the problem of peeling off of the protruding parts due to shear force, thereby ensuring the integrity of the molding sand material; By driving the horizontal shaft 9 to rotate, the horizontal shaft 9 drives the gear 10 on its outer peripheral surface to rotate, and the two gears 10 will drive the toothed plates 8 meshing therewith to move, and then the two toothed plates 8 will move away from each other. Moreover, since the L-shaped connecting frame 7 is slidably arranged in the limiting groove 11 through the limiting plate, under the limitation of the two, it can be ensured that the two L-shaped connecting frames 7 move on the same axis during the movement, so that the two side templates 201 are conveniently moved away from each other, and the problem of the side template 201 being deflected during the movement is avoided, which is conducive to taking out the molding sand material. When the side template 1 201 needs to be taken out, the control motor drives one of the horizontal shafts 9 to rotate, and one of the horizontal shafts 9 drives the gear 2 12 connected thereto to rotate. Since the adjacent gear 2 12 is meshed and connected, the horizontal shaft 9 on the other side will also rotate, so that the two horizontal shafts 9 can rotate at the same time. With this design, when using one control source, the horizontal shaft 9 drives the gear 10 to rotate, the gear 10 drives the tooth plate 8 to move, and the tooth plate 8 drives the L-shaped connecting frame 7 and the side template 1 201 to move, thereby making the two side templates 1 201 move at the same time, that is, the two side templates 1 201 can be moved away from each other at the same time, which is convenient for the subsequent removal of the molding sand material; when the L-shaped connecting frames 7 on both sides drive the corresponding side template 1 201 to move toward the side away from the molding sand material, the two side templates 1 201 will first move on the side wall of the side template 2 202, that is, the two side templates 1 201 will drive the limiting frame 14 to move along the limiting square groove 13, and at this time the side template 2 202 will not move; When the side template 1 201 is completely separated from the side template 2 202, the pushing unit will start to operate and drive the two side templates 202 to move away from each other. In this way, the side template 1 201 moves first and the side template 2 202 moves later, which facilitates the removal of sand and avoids the problem of the protruding parts of the molding sand peeling off when some molding sand with protrusions is directly ejected or pulled down, which is beneficial to the subsequent use of molding sand. When the gear 2 12 is rotating and drives the side template 1 201 away from each other, the limiting boss 17 will move toward the end of the limiting support rod 15. When the side template 1 201 moves along the limiting square groove 13 and is completely separated from the side template 202, the raised end of the limiting boss 17 will contact the end of the limiting support rod 15. As the gear 2 12 continues to rotate, the raised end of the limiting boss 17 will squeeze the end of the limiting support rod 15, so that the limiting support rod 15 drives the sliding plate 16 and the side template 2 202 to move away from the molding sand material. This makes it convenient for the side template 1 201 and the side template 2 202 to move successively, ensuring the molding rate of the sand material. When the end of the limiting support rod 15 is squeezed and moved by the limiting boss 17, The limiting support rod 15 drives the sliding plate 16 away from the molding sand material, and the sliding plate 16 will squeeze the limiting spring 19 connected to it, so that the limiting spring 19 is in a compressed state. When the molded sand material is taken out and the template needs to be restored to its initial state, the two gears 2 12 are controlled to reverse, so that the gear 2 12 drives the limiting boss 17 away from the limiting support rod 15. At this time, the limiting spring 19 and the sliding plate 16 are no longer squeezed. As the limiting boss 17 gradually moves away from the limiting support rod 15, under the action of the elastic force of the limiting spring 19 in the compressed state, it can quickly drive the sliding plate 16 and the side template 2 202 to return to their initial positions, and then it is convenient for the side template 1 201 to move along the limiting square groove 13 to the initial position of the side template 2 202.

[0034] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A casting sand mold forming device, characterized in that: It includes a support frame, the upper end surface of the support frame is fixedly installed with a mold base plate, the upper end surface of the support frame is installed with a fixed bracket, the end of the fixed bracket away from the support frame is installed with a reciprocating cylinder, the telescopic end of the reciprocating cylinder is installed with an upper template, the upper end surface of the mold base plate is slidably installed with side template 1 and side template 2, and a molding cavity is formed between the side template 1, side template 2 and the upper template.

2. A casting sand mold forming device according to claim 1, characterized in that: Contact 1 is installed on the side wall of the upper template, and contact 2 is installed on the upper end surface of the support frame through a support rod. Contact 1 and contact 2 are designed to be on the same vertical plane; when the upper template moves up and down following the reciprocating cylinder, contact 1 and contact 2 will contact, and a feed port is opened on the upper end surface of the upper template.

3. A casting sand mold forming device according to claim 1, characterized in that: Two side templates 1 and 2 are designed respectively, and the side walls of the two side templates 1 are installed with L-shaped connecting frames. The ends of the L-shaped connecting frames away from the side template 1 are installed with tooth plates, and the tooth plates are slidably arranged on the lower end surface of the mold base plate. The lower end surface of the mold base plate is provided with a driving unit, and the driving unit is used to drive the two tooth plates away from each other.

4. A casting sand mold forming device according to claim 3, characterized in that: The driving unit includes two sets of transverse shafts, which are rotatably arranged below the mold base plate. Gears 1 are fixedly installed on the outer circumferences of the two sets of transverse shafts. The two sets of gears 1 are respectively engaged with two tooth plates. A limiting groove 1 is provided on the upper end surface of the mold base plate, and the L-shaped connecting frame is slidably arranged in the limiting groove 1 through a limiting plate.

5. A casting sand mold forming device according to claim 4, characterized in that: The driving unit also includes gear 2, which is provided in plurality and is fixedly mounted on the ends of the transverse shafts respectively. Adjacent gear 2s are meshed with each other. The gear 2s are rotatably arranged on the side wall of the support frame. The lower end surface of the mold bottom plate is provided with a groove adapted to the gear plate, and one of the ends of the transverse shafts is connected to the output end of the motor.

6. A casting sand mold forming device according to claim 5, characterized in that: The side wall of the side template 2 is provided with a limiting square groove, and the side template 1 is slidably arranged inside the limiting square groove through a limiting frame. The shape of the limiting frame is adapted to the shape of the limiting square groove. The side wall of the side template 2 is provided with a pushing unit, and the pushing unit is used to drive the side template 2 to move toward a side away from the molding sand material.

7. A casting sand mold forming device according to claim 6, characterized in that: The pushing unit includes a limiting support rod, which is slidably arranged on the upper end surface of the mold base plate. A sliding plate is installed on the end of the limiting support rod, and the sliding plate is slidably arranged on the upper end surface of the mold base plate. The end of the sliding plate is fixedly connected to the side template 2, and the side walls of the two gears 2 are both equipped with limiting bosses. When the gear 2 rotates, the raised part of the limiting boss will contact the end of the limiting support rod.

8. A casting sand mold forming device according to claim 7, characterized in that: The shape of the side of the limiting support rod close to the limiting boss is arc-shaped, and the side wall of the limiting boss is provided with an arc-shaped groove adapted to the limiting support rod.

9. A casting sand mold forming device according to claim 7, characterized in that: A guide groove is provided on the upper end surface of the mold bottom plate, and the sliding plate is slidably arranged inside the guide groove. A limit spring is fixedly installed on the groove wall of the guide groove, and the limit spring is connected to the side wall of the sliding plate away from the groove wall of the guide groove.

10. The casting sand mold forming device according to claim 7, characterized in that: The two limiting support rods are designed on two different axes, and the end of each limiting support rod corresponds to each limiting boss.

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